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Electronic control system used for small-sized single-cylinder four-stroke gasoline engine

An electronic control system, gasoline engine technology, applied in the direction of engine control, electrical control, automatic control, etc., can solve the problems of high cost, complex structure, etc., achieve the effect of easy operation, improve the performance of the whole machine, and improve the stability

Active Publication Date: 2015-12-16
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these patents are also aimed at the control system of small gasoline engines, they have the problems of complex structure and high cost.

Method used

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  • Electronic control system used for small-sized single-cylinder four-stroke gasoline engine
  • Electronic control system used for small-sized single-cylinder four-stroke gasoline engine
  • Electronic control system used for small-sized single-cylinder four-stroke gasoline engine

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0017] Such as figure 1 As shown, the system takes the 168F small carburetor gasoline engine as the object, and develops a complete set of electronic control system. Based on a small gasoline engine, the electronic control unit connects all the sensors and actuators, and the fuel tank, fuel pump, filter, fuel inlet pipe, fuel pressure regulator, fuel return pipe, and fuel injector together form the fuel circuit of the engine. The gasoline in the fuel tank is delivered to the position of the fuel injector through the fuel pump through the fuel delivery pipe and filtered by the filter. The fuel pressure regulator can control the pressure in the fuel pipe to 0.25MPa. Go back to the gas tank.

[0018] Such as figure 1 and figure 2 As shown, the body temperature sensor and the...

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Abstract

The invention relates to an electronic control system for a small-sized single-cylinder four-stroke gasoline engine. An MC9S12P128 chip serves as a main chip of an electronic control unit. An MC33812 chip serves as a driving chip of three main actuators of an oil sprayer, an igniter and a relay. Selected sensor parts include an engine body temperature sensor, an inlet gas temperature sensor, an inlet gas pressure sensor, a throttle position sensor and a Hall type crankshaft position sensor. Monitoring and calibrating functions of a liquid crystal touch screen are achieved in a CAN communication manner. According to the electronic control system, the oil spraying amounts and advance angles of ignition under all working conditions can be accurately controlled, in addition, a self-diagnostic function is achieved, and therefore the dynamic property, the economical efficiency and the emission performance of the engine are improved, and the requirement of higher-stage emission regulations is met.

Description

technical field [0001] The invention relates to the field of engine electronic control, in particular to an electronic control system for a small single-cylinder four-stroke gasoline engine. technical background [0002] Due to its small size, compact structure, and high speed, small gasoline engines are widely used in agricultural and forestry plant protection machinery, garden machinery, small agricultural machinery, generator sets, construction machinery, outboard machinery, etc. In view of the huge production and sales of small gasoline engines in my country, more and more attention has been paid to their energy consumption and emission pollution. At the same time, in order to meet the requirements of higher emission regulations, it is an important task for the industry to develop and equip electronic control systems with higher control accuracy. . The use of electronic control technology can make the ignition advance angle, fuel injection quantity control, air-fuel rati...

Claims

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Application Information

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IPC IPC(8): F02B77/08F02D41/30F02P5/15
Inventor 李捷辉毛功平丁乐盛
Owner JIANGSU UNIV
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